相关知识点: 试题来源: 解析 B。原因:文中提到“In industry, oxygen has many applications. It is used in steelmaking to remove impurities from iron. It is also used in the production of chemicals such as sulfuric acid.”。 反馈 收藏
解析 A核心短语/词汇:help sb./ sth. (to) do sth. 帮助某人/某物做某事句子译文:氧气是唯一的助燃气体吗? 本题考查定语从句。___helps fire burn 用来修饰之前的名词gas, 该从句的引导词在定语从句中做主语,不能省略,先行词有only 修饰时不能用which; what 不能引导定语从句,故选项A符合题意。反馈...
After a run or workout, your body burns more calories in a phenomenon known as post-exercise oxygen consumption a.k.a. EPOC. Here's what to know about it.
Fish ___ oxygen through their gills(鳃). III.单项填空: () 1. Air pollution can affect humans by___ sore eyes and respiratory problems, especially in children and___. A. cause, the old B. causing, the older C. causing, the elderly D. cause, the elderly ()...
Within limits, the effect of certain increased steps in the cascade can be offset by raising the concentration of oxygen in the inspired gas. However, the quantitative relationships are totally different depending on which step in the cascade is abnormal....
A.that B./ C.what D.it相关知识点: 试题来源: 解析 A 考查定语从句。Gas为先行词,在定从___ helps fire burn中作主语,且that作主语时不可省略。所以选A。 分析总结。 gas为先行词在定从helpsfireburn中作主语且that作主语时不可省略反馈 收藏 ...
What is the gas that is mainly responsible for the greenhouse effect? A. Oxygen B. Nitrogen C. Carbon dioxide D. Hydrogen 相关知识点: 试题来源: 解析 C。本题考查温室效应的主要气体。二氧化碳是主要导致温室效应的气体。氧气(A 选项)和氮气(B 选项)不是温室效应的主要气体。氢气(D 选项)在大气中...
What is the maximum oxygen percentage allowed in a tank?A.12%B.6%C.8%D.10%的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工具.一键将文档转化为在线题库手机刷题,以提高学习效率,是学习的生产力工具
Heat generated by consumption of 1 liter of oxygen when food is oxidized
Oxygen saturation levels (SpO2) between 95 to 100 percent are considered normal for both adults and children (below 95% is considered abnormal). People over 70 years of age may have oxygen levels closer to 95%.